Reorganize assets

assets/assets_linux/shaders/opengl/ConvertUV.frag

@@ -0,0 +1,35 @@
+#version 300 es
+
+#ifdef GL_ES
+precision lowp float;
+#endif
+
+uniform sampler2D image;
+
+layout(shared) uniform ColorMatrix {
+  vec4 color_vec_y;
+  vec4 color_vec_u;
+  vec4 color_vec_v;
+  vec2 range_y;
+  vec2 range_uv;
+};
+
+in vec3 uuv;
+layout(location = 0) out vec2 color;
+
+//--------------------------------------------------------------------------------------
+// Pixel Shader
+//--------------------------------------------------------------------------------------
+void main() {
+  vec3 rgb_left  = texture(image, uuv.xz).rgb;
+  vec3 rgb_right = texture(image, uuv.yz).rgb;
+  vec3 rgb       = (rgb_left + rgb_right) * 0.5;
+
+  float u = dot(color_vec_u.xyz, rgb) + color_vec_u.w;
+  float v = dot(color_vec_v.xyz, rgb) + color_vec_v.w;
+
+  u = u * range_uv.x + range_uv.y;
+  v = v * range_uv.x + range_uv.y;
+
+  color = vec2(u, v * 224.0f / 256.0f + 0.0625);
+}